Fix images_path bug in the image cache buster

As said in #1092, images_path is not being honored and the image cache buster fails as it can't find the image
Use listargs in images module
Cleanup comments
Update regions support support-handling
Fix regions test output
Use listargs for text-shadow, fix broken else and tests
Make the project_path variable setable as an --app-dir option on CLI.
Update lib/compass/sass_extensions/sprites/engines.rb

Fix spelling errors
Merge pull request #1164 from charlietran/patch-1

Update lib/compass/sass_extensions/sprites/engines.rb
Merge pull request #1165 from dvessel/master

Do not overwrite default legacy support.
Revert "resolve relative paths the way Listen does via #1159"

This reverts commit 16383b55188b810c74e8c96f978feed92ca45cb7.
Merge branch 'master' of github.com:chriseppstein/compass
updated watcher to support watching from the same directory as the sass is stored via #1159
updated Gemfile
Merge pull request #1155 from androa/project_path-as-option

Make the project_path variable setable as an option on CLI.
Merge branch 'stable'
working on offical gradient implimentation
gradent tests updated for linear
remove old webkit gradient support
removed unused sass function